日本NACHI電磁換向閥,不二越電磁換向閥
電磁換向閥的品種繁多,按其工作位置數和通路數的多少可分為二位三通、二位四通、三位四通等;按其復位和定位形式可分為彈簧復位式、鋼球定位式、無復位彈簧式;按其閥體與電磁鐵的連接形式可分為法蘭連接和螺紋連接;按其所配電磁鐵的結構形式可分為干式和濕式,每類又有交流、直流、本整等形式,而且所需電源電壓又有好多種,因而在其結構上存在很多差別。 1.按接口數及切換位置數分類 接口是指閥上各種接油管的進、出口,進油口通常標為P,回油口則標為R或T,出油口則以A、B來表示。閥內閥芯可移動的位置數稱為切換位置數,通常我們將接口稱為“通”,將閥芯的位置稱為“位”。因此,按其工作位置數和通路數的多少可分為二位三通、二位四通、三位四通等。 位和通路符號
2.按操作方式分類 推動閥內閥芯移動的動力有手、腳、機械、液壓、電磁等方法。 3.按其復位和定位形式分類 可分為彈簧復位式、鋼球定位式、無復位彈簧式。 4.按其閥體與電磁鐵的連接形式分類 可分為法蘭連接和螺紋連接。 5.按其所配電磁鐵的結構形式分類 可分為干式和濕式。 歸類下: 按照結構形式分:座閥式換向閥、滑閥式換向閥、轉閥式換向閥
日本NACHI電磁換向閥,不二越電磁換向閥
在(zai)(zai)液(ye)(ye)(ye)(ye)壓傳(chuan)動(dong)(dong)(dong)(dong)系統中廣泛采用(yong)(yong)的(de)(de)(de)(de)是(shi)滑(hua)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)式換(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa),在(zai)(zai)這(zhe)里主(zhu)(zhu)要介紹(shao)這(zhe)種(zhong)(zhong)(zhong)換(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)幾(ji)種(zhong)(zhong)(zhong)結構。 1.手動(dong)(dong)(dong)(dong)換(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa):手動(dong)(dong)(dong)(dong)換(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)是(shi)利用(yong)(yong)手動(dong)(dong)(dong)(dong)杠桿來(lai)改變閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)位(wei)置實現換(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)的(de)(de)(de)(de) 2.機(ji)動(dong)(dong)(dong)(dong)換(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa):又(you)稱行程閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa),它主(zhu)(zhu)要用(yong)(yong)來(lai)控(kong)(kong)制(zhi)液(ye)(ye)(ye)(ye)壓機(ji)械運(yun)動(dong)(dong)(dong)(dong)部件的(de)(de)(de)(de)行程,它是(shi)借助于安裝(zhuang)在(zai)(zai)工作(zuo)(zuo)臺上的(de)(de)(de)(de)擋鐵或凸輪(lun)來(lai)迫使閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)移(yi)動(dong)(dong)(dong)(dong),從而(er)控(kong)(kong)制(zhi)油(you)(you)(you)液(ye)(ye)(ye)(ye)的(de)(de)(de)(de)流(liu)動(dong)(dong)(dong)(dong)方向(xiang)(xiang)(xiang)(xiang)(xiang)。機(ji)動(dong)(dong)(dong)(dong)換(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)通(tong)(tong)常是(shi)二位(wei)的(de)(de)(de)(de),有二通(tong)(tong)、三(san)通(tong)(tong)、四(si)通(tong)(tong)和(he)(he)(he)五通(tong)(tong)幾(ji)種(zhong)(zhong)(zhong),其中二位(wei)二三(san)通(tong)(tong)機(ji)動(dong)(dong)(dong)(dong)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)又(you)分(fen)常閉和(he)(he)(he)常開兩種(zhong)(zhong)(zhong)。 3.電(dian)(dian)(dian)磁(ci)(ci)換(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa):利用(yong)(yong)電(dian)(dian)(dian)磁(ci)(ci)鐵的(de)(de)(de)(de)通(tong)(tong)、斷(duan)電(dian)(dian)(dian)而(er)直接(jie)推動(dong)(dong)(dong)(dong)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)來(lai)控(kong)(kong)制(zhi)油(you)(you)(you)口的(de)(de)(de)(de)連通(tong)(tong)狀態。 4.液(ye)(ye)(ye)(ye)動(dong)(dong)(dong)(dong)換(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa) 5.電(dian)(dian)(dian)液(ye)(ye)(ye)(ye)換(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa):由(you)電(dian)(dian)(dian)磁(ci)(ci)換(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)和(he)(he)(he)液(ye)(ye)(ye)(ye)動(dong)(dong)(dong)(dong)換(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)組(zu)合(he)而(er)成。 電(dian)(dian)(dian)磁(ci)(ci)換(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)起導作(zuo)(zuo)用(yong)(yong),它可以(yi)改變控(kong)(kong)制(zhi)液(ye)(ye)(ye)(ye)流(liu)的(de)(de)(de)(de)方向(xiang)(xiang)(xiang)(xiang)(xiang),從而(er)改變液(ye)(ye)(ye)(ye)動(dong)(dong)(dong)(dong)換(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)位(wei)置。由(you)于操縱液(ye)(ye)(ye)(ye)動(dong)(dong)(dong)(dong)換(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)液(ye)(ye)(ye)(ye)壓推力可以(yi)很大(da),所(suo)以(yi)主(zhu)(zhu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)可以(yi)做得很大(da),允許有較大(da)的(de)(de)(de)(de)流(liu)量(liang)通(tong)(tong)過。這(zhe)樣(yang)用(yong)(yong)較小的(de)(de)(de)(de)電(dian)(dian)(dian)磁(ci)(ci)鐵就(jiu)能(neng)控(kong)(kong)制(zhi)較大(da)的(de)(de)(de)(de)液(ye)(ye)(ye)(ye)流(liu)。 6.比(bi)例式電(dian)(dian)(dian)磁(ci)(ci)換(huan)(huan)向(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa) 比(bi)例方向(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)是(shi)以(yi)在(zai)(zai)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)外裝(zhuang)置的(de)(de)(de)(de)電(dian)(dian)(dian)磁(ci)(ci)線(xian)(xian)圈所(suo)產生的(de)(de)(de)(de)電(dian)(dian)(dian)磁(ci)(ci)力,來(lai)控(kong)(kong)制(zhi)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)的(de)(de)(de)(de)移(yi)動(dong)(dong)(dong)(dong),依靠控(kong)(kong)制(zhi)線(xian)(xian)圈電(dian)(dian)(dian)流(liu)來(lai)控(kong)(kong)制(zhi)方向(xiang)(xiang)(xiang)(xiang)(xiang)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)內閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)(xin)的(de)(de)(de)(de)位(wei)移(yi)量(liang),故可同(tong)時控(kong)(kong)制(zhi)油(you)(you)(you)流(liu)動(dong)(dong)(dong)(dong)的(de)(de)(de)(de)方向(xiang)(xiang)(xiang)(xiang)(xiang)和(he)(he)(he)流(liu)量(liang)。
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